But it's actually so Christian it's the centre of the Catholic Church in Britain.
The Twitter account of the Ukip branch of South Thanet have mistakenly identified Westminster Cathedral as a mosque.
The mistake came about in an exchange with BBC correspondent Giles Dilnot, which has now been deleted.
They accused him of filming a piece on what the public think about Nigel Farage in front of a mosque.
Accused of bias by a Kipper for doing my moodbox in front of "a mosque" ...it was Westminster Catholic cathedral
— Giles Dilnot (@reporterboy) November 25, 2014 Once they realised the error, they immediately apologised, although their supporters claim they can see where they were coming from.
@MopCrop @ukip_sththanet @reporterboy To be fair the building us pretty Gothic and middle-eastern looking in style.
— Thomas Evans (@ThomasEvansUKIP) November 27, 2014 It's so Christian it's actually the centre of the Catholic Church in Britain
Westminster Cathedral is actually the seat of Catholicism in England where the highest-ranked Catholic bishop in the country sits, and has been such for over 100 years.
"It was the site of the prison once but it's never been a mosque", the Westminster Cathedral spokesperson told us.
A former parishioner can also confirm that the services held at Westminster Cathedral were indeed Catholic.
It's not a mosque, but it is Byzantine
Westminster Cathedral is actually built in the Byzantine style. We'll grant them, it's unusual in British churches, but not unknown. Here's a little architectural primer.
Sadly the Ukipper behind the tweet has now been denied access to the South Thanet twitter account.
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